Cross Levee Type Design and Layout of Yellow River Super Large Bridge Across Yangxin Expressway
The super large bridge across the Yellow River on the Yangxin Expressway has unique characteristics,complex conditions,high seismic fortification intensity,large erosion,large swings in the main channel,and high requirements for bridge stability and dura-bility.The design of bridge type and bridge span should take into full consideration the comprehensive management of the Yellow Riv-er,development and utilization,flood control planning,navigation standards and other issues.At the same time,when choosing a reason-able span and determining the bridge type,not only must the bridge be located in the Yellow River IV channel requirements,but also comprehensively consider the terrain,hydrology,environmental protection and other factors along the line to connect it with other arteri-al highways,and realize the docking and connection of highways and domestic railways,forming a modern comprehensive transportation system.In view of the fact that the actual length of the Yellow River Bridge is 2 240 m,attention should be paid to the selection of bridge type schemes in the design to reduce the difficulty of bridge construction,reduce engineering costs,and facilitate bridge con-struction.This paper compares and analyzes the bridge design of the Yellow River super large bridge and the layout of the bridge across the levee,and selects a prestressed concrete continuous beam bridge with reasonable structural force,mature construction experience,low cost and low maintenance later as the optimal design scheme.
super large bridgedesignbridge across the embankmentroad network connectionscheme comparison and selection
万方数据
维普
